Does Kylie Jenner have a bun in the oven?!

The 18-year-old is igniting pregnancy rumors after she stepped out wearing a variety of baggy clothing, including overalls and loose-fitting T-shirts, that have fans wondering if she's set to welcome a child with boyfriend Tyga.

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Scroll down to see five pics that leave us questioning whether the reality star is, in fact, expecting baby No. 1!